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参数资料
| 型号： | MAX8790AETP+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 6/23页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR WHITE BCKLGT 20-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 75 |
| 拓扑： | PWM，升压（升压） |
| 输出数： | 6 |
| 内部驱动器： | 无 |
| 类型 - 主要： | 背光 |
| 类型 - 次要： | 白色 LED |
| 频率： | 1MHz |
| 电源电压： | 4.5 V ~ 5.5 V，5.5 V ~ 26 V |
| 输出电压： | 5V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-WFQFN 裸露焊盘 |
| 供应商设备封装： | 20-TQFN-EP |
| 包装： | 管件 |
| 工作温度： | -40°C ~ 85°C |
Six-String White LED Driver with Active
Current Balancing for LCD Panel Applications
Typical Operating Characteristics
(Circuit configuration 1, V IN = 12V, V SHDN = V IN , LEDs = 8 series x 6 parallel strings, ISET = V CC , T A = +25°C, unless otherwise noted.)
BOOST CONVERTER EFFICIENCY
vs. INPUT VOLTAGE (BRT = 100%)
NORMALIZED POWER vs. TOTAL LED CURRENT
(ANALOG AND DPWM DIMMING)
LED CURRENT vs. BRT DUTY CYCLE
(BRT AT 200Hz)
94
1.2
NORMALIZED TO V IN = 20V, AND I LED = 20mA
25
IDENTICAL FOR DPWM DIMMING
93
92
91
750kHz
500kHz
1.0
0.8
V IN = 7V
TOTAL INPUT
20
15
AND ANALOG DIMMING
90
0.6
POWER, ANALOG
89
88
87
86
1MHz
0.4
0.2
0
TOTAL INPUT
POWER, DPWM
TOTAL LED
POWER, DPWM
TOTAL LED
POWER, ANALOG
10
5
0
7
12 17
1
10 100
1000
1
10
100
INPUT VOLTAGE (V)
LED CURRENT
vs. AMBIENT TEMPERATURE (BRT = 100%)
21.0
20.8
0.05
0.04
TOTAL LED CURRENT (mA)
LED CURRENT REGULATION
vs. INPUT VOLTAGE
0.7
0.6
BRT DUTY CYCLE (%)
FB_ VOLTAGE vs. LED CURRENT
(ANALOG DIMMING)
20.6
20.4
20.2
20.0
19.8
19.6
19.4
19.2
19.0
0.03
0.02
0.01
0
-0.01
-0.02
-0.03
-0.04
-0.05
DPWM DIMMING
BRT = 10%
DPWM DIMMING
BRT = 100%
ANALOG DIMMING
BRT = 10%
0.5
0.4
0.3
0.2
0.1
0
0
20
40
60
80
7
12 17
0
5
10 15 20 25
30
7
6
AMBIENT TEMPERATURE ( ° )
SUPPLY CURRENT vs. INPUT VOLTAGE
(DPWM DIMMING)
INPUT VOLTAGE (V)
SHUTDOWN CURRENT vs. INPUT VOLTAGE
7
6
LED STRING CURRENT (mA)
SWITCHING WAVEFORMS
(BRT = 100%)
MAX8790A toc09
5
4
BRT = 100%
5
4
V LX
10V/div
0V
3
3
2
BRT = 0%
2
I L
500mA/div
1
0
1
0
0mA
7
12 17
7
12 17
200ns/div
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
6
_______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8790AETP+ | 功能描述:LED照明驱动器 Six-String White LED Driver RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| MAX8790AETP+T | 功能描述:LED照明驱动器 Six-String White LED Driver RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| MAX8790AETP+X01 | 功能描述:LED照明驱动器 Six-String White LED Driver RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| MAX8790AEVKIT+ | 功能描述:LED 照明开发工具 MAX8790A Eval Kit RoHS:否 制造商:Fairchild Semiconductor 产品:Evaluation Kits 用于:FL7732 核心: 电源电压:120V 系列: 封装: |
| MAX8790ETP+ | 功能描述:LED照明驱动器 Six-String White LED Driver RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
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